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Mopar Newbie Question about Putting Together a Gen 2 Street Hemi For a 70 Roadrunner

soundhd

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A couple years ago I purchased a pretty nice 1970 Roadrunner (383 auto). Have always wanted to own a Mopar Hemi car (am getting older and if I don't do it now it's not going to happen) but an "original" one is and has always been way out my price range so the only way to do it would be to purchase a 383 car and hopefully be able to afford to either buy a Hemi crate motor or try to put one together. Well building one from scratch is really way beyond my expertise so the only option is either a complete crate motor or try to "piece" one together buy purchasing a new short block add add heads, rocker arm assemblies, dual intake & carbs, etc.....Want to have aluminum heads, Edelbrock has them now as well as the dual carb intake and carbs.
Rocker arm set/assemblies: Have only found one source, Indy Heads. Are there any others?
A new 426 Gen 2 Street Hemi crate motor is around $16,000 but that is with iron heads and I guess I could replace the heads but I am trying to see if I can put one together for a bit less money. Not looking to put together a race motor just a standard Gen 2 street Hemi. Anyway any help would be appreciated.

Thanks
 
Another source for rockers and cylinder heads. http://stagev.com/

Plan on spending a lot more money and a lot more time than you think for putting one together.

This is a pump gas 572 with 733 LB-FT and 784 HP. 12" vacuum @ 800rpm for the fuel injection that goes on it next.

Tim Hodge 572 145.jpgTim Hodge 572 144.jpg

The bearded wonder is my son, right hand man and head porter.
 
A couple years ago I purchased a pretty nice 1970 Roadrunner (383 auto). Have always wanted to own a Mopar Hemi car (am getting older and if I don't do it now it's not going to happen) but an "original" one is and has always been way out my price range so the only way to do it would be to purchase a 383 car and hopefully be able to afford to either buy a Hemi crate motor or try to put one together. Well building one from scratch is really way beyond my expertise so the only option is either a complete crate motor or try to "piece" one together buy purchasing a new short block add add heads, rocker arm assemblies, dual intake & carbs, etc.....Want to have aluminum heads, Edelbrock has them now as well as the dual carb intake and carbs.
Rocker arm set/assemblies: Have only found one source, Indy Heads. Are there any others?
A new 426 Gen 2 Street Hemi crate motor is around $16,000 but that is with iron heads and I guess I could replace the heads but I am trying to see if I can put one together for a bit less money. Not looking to put together a race motor just a standard Gen 2 street Hemi. Anyway any help would be appreciated.

Thanks
After doing what you said, I can tell you it will be much cheaper to buy one already built.
 
IMO,,Do not buy a crate from Indy,thier rep is terrible. I accumulated all the parts for mine,siamese bore block and iron headed with good internals.For a street bruzer,a mild hemi can make 600 hp.
What are your intentions? Street car,,,,,street strip,,,,,,,how fast do you want to go?
 

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Buy yourself a siamese bore Mopar block. Then buy a complete bottom end utilizing a good crank, rods and pistons from one source. a package deal. Eagle and a few others.. Rocker arms a few companies available. I would start off with a square bore stroke and aluminum heads from Stage VI and their rocker arms. You will not build a Hemi for cheap period! I have never bought anything from Indy, i only hear a long line of people who say to avoid them at all cost. But again that is from others.
 
You can more than likely spend the same money and buy a new Hemi Challenger.
 
Currently have 2 all steel hemis up and running. One blown alky,one tunnel rammed. And just picked up 90% of the parts needed to put together an all aluminum,14-71 blown,dry sumped hemi. The latest one should be completed at total cost about 12-14k. Thats with slider clutch and lenco trans. And a lot of spare parts. All of these were abandoned projects. Gotta keep cash handy and eyes open.
 
How do you like those rocker arms?

They are pretty and they have one heck of a lotta parts.

Tim Hodge 572 120.jpg

A real convenience is that you can install or remove one rocker arm at a time.

Ray and Dave were always polite when I could get in touch with them but it was almost impossible to get them to call me back even if they said, "I'll call you back in just a few minutes." I'd wait for days and call them back. I'm sure I was a real pain in the arse all the times I had to call to sort out rocker lengths, ratios and stand heights.

I had to strip all the assemblies and remove all the aluminum shavings from the fulcrum bearings and adjuster threads. The nuts that held the rockers to the stands didn't have enough machined clearance to the rocker fulcrum shafts and required a slight bevel to keep from pushing out some proud metal on the nut where it met the fulcrum. A different exhaust rocker location would have prevented some of the extensive grinding I had to do on the valley wall and the pushrod opening in the head so that the exhaust pushrods wouldn't rub on them.

I'll try another rocker system the next time.
 
The pushrod clearance issues seem to be with any hemi rocker system and block combo, so a full mockup is always in order. They're just a royal pain.
 
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